DOWNHOLE THERMO-GAS GENERATOR Russian patent published in 2003 - IPC

FIELD: equipment of oil and gas production, particularly, downhole gas generators; applicable in complex stimulation of bottom-hole formation zone. SUBSTANCE: downhole thermo-gas generator has combustible members block in combustible or incombustible body, igniter, fastening unit. Body is of multimode make in the form of dynamic system consisting at least of two massive modules interconnected by flexible member. Modules are provided with flexible scrapers and have radial and tangential holes for discharge of combustible products. Parameters of flexible members and flexible scrapers are selected to provide for transverse, axial and torsional vibrations of dynamic system of thermo-gas generator to increase complex cleaning of bottom-hole formation zone and walls of tubings by contact mechanical and hydroerosion methods. As a result, hydraulic perfection of producing formation-well system is improved, well oil flow rate increases, and concurrent removal of corrosion products, asphalt-resinous and paraffin and other solid deposits from walls of tubings is accomplished. EFFECT: higher efficiency of use. 1 dwg